34800

Endovascular repair of infrarenal abdominal aortic aneurysm with a modular bifurcated prosthesis (2 docking limbs)

CPT code 34701 describes the endovascular repair of an infrarenal abdominal aortic aneurysm (AAA) using a modular bifurcated prosthesis that requires the deployment of two docking limbs. This procedure is a minimally invasive surgical intervention designed to reinforce a weakened section of the abdominal aorta to prevent rupture. During the procedure, a vascular surgeon or interventionalist obtains access to the arterial system, typically through the femoral arteries via percutaneous puncture or surgical cutdown. Under continuous fluoroscopic guidance, a delivery catheter containing the compressed stent-graft is advanced through the iliac arteries and into the aorta. The main body of the bifurcated prosthesis is meticulously positioned just below the renal arteries and then deployed. Following the successful placement of the main body, the clinician cannulates the contralateral gate and deploys a docking limb into the iliac artery. A second docking limb is then deployed on the ipsilateral side. The goal is to exclude the aneurysmal sac from the high-pressure systemic blood flow by creating a new channel for blood through the stent-graft. The procedure includes all necessary catheterization, positioning, and radiological supervision and interpretation required to complete the repair. This modern approach, which replaced older codes like 34800, is often preferred for patients who are high-risk candidates for traditional open abdominal surgery due to comorbid conditions like cardiovascular disease or advanced age. Post-deployment, balloon angioplasty is frequently performed at the attachment zones to ensure an adequate seal and prevent endoleaks.

Clinical Indications

  • Infrarenal abdominal aortic aneurysm (AAA) with a diameter greater than 5.5 cm in men or 5.0 cm in women.
  • Rapidly expanding AAA, defined as an increase in diameter of 0.5 cm or more within a six-month period.
  • Symptomatic abdominal aortic aneurysm, including symptoms such as abdominal or back pain.
  • Presence of an infrarenal aneurysm with anatomy suitable for endovascular stent-grafting.
  • Aneurysm associated with high risk for open surgical repair (e.g., severe COPD, heart failure).
  • Abdominal aortic aneurysm with co-existing iliac artery aneurysms requiring treatment.

Procedure Steps

  1. Establish arterial access through bilateral femoral arteries (percutaneous or surgical cutdown).
  2. Insert and advance guidewires and sheaths into the aorta under fluoroscopy.
  3. Perform initial aortography to visualize the renal artery origins and the aneurysm's anatomy.
  4. Advance the primary delivery system containing the main bifurcated stent-graft body.
  5. Deploy the main body of the prosthesis just distal to the lowest renal artery.
  6. Cannulate the contralateral docking gate of the main body prosthesis.
  7. Advance and deploy the contralateral iliac docking limb into the iliac artery.
  8. Advance and deploy the ipsilateral iliac docking limb into the iliac artery.
  9. Perform modeling balloon angioplasty at the proximal and distal fixation sites to ensure a secure seal.
  10. Conduct a completion angiogram to verify graft patency and check for the presence of endoleaks.
  11. Remove delivery systems and sheaths, followed by closure of the access sites.

Coding Guidelines

  • Code 34701 includes all vascular access, catheterization, and fluoroscopic guidance (radiological supervision and interpretation) needed to complete the repair.
  • Do not report 34701 in conjunction with 34702, which describes a repair with only one docking limb.
  • If the repair is for a ruptured aneurysm, use codes 34705 or 34706 instead of 34701.
  • Surgical exposure of the femoral artery (34812) or the iliac artery (34820) may be reported separately if performed.
  • The use of an endovascular iliac occluder (34808) or femoral-femoral bypass (34813) to complete the repair should be coded separately.
  • Extensive repair of an artery (e.g., 35226) or the use of a prosthetic conduit for delivery (34833) are separate reportable services.
  • Pre-procedure sizing and planning are included in the global surgical package and are not separately billable.

Associated ICD-10 Codes